u-blox RCB-F9T Adapter PCB w/ USB and SMA

Stackable adapter PCB for u-blox RCB-F9T timing board with the following features:

• USB-to-UART converter (SiLabs CP2102)
• fully USB-powered (option to supply RCB-F9T from low noise voltage source)
• SMA connectors for TP1 and TP2 pins of RCB-F9T
• SMA can drive 50 Ohm loads via buffer opamp (TI BUF602)

This repository contains KiCad EDA files of the PCB design and JLCPCB fabrication files.

Renderings of Adapter PCB with/without RCB-F9T

Revisions

Revision 1

Initial revision including JLCPCB fabrication files.

Known Issues:

• RCB-F9T NRST pin is incorrectly treated as RST (pulled down via R41)
• FB41 is too close to mounting hole

Board is fully operational after desoldering R41.

Image of Adapter PCB with RCB-F9T

Revision 2

Above issues fixed in EDA files (not fabrication files), but design was neither produced nor verified.